Right, on the SD card, create a folder called "Media" - without the quotes Then inside that "Media" folder, create folders called, "Notifications", "Ringtones", "Alarms". - again, without quotes. Now, if you want to change your message tone, check your .mp3`s in the "Notifications" folder, then open your message client(the little green icon on the home screen), press the menu touch sensitive button(lower left under the screen), select "Settings" then scroll down to Ringtones, and just change it there. This can be done for main notifications, for emails, Calendar, messages, and you can put mp3`s in the Ringtones folder and set them too, in the main phone settings screen, and you can change the tones for just about everything.